Looking for a guest book idea for your next baby shower? Our Onesie Baby Shower Guest Book Alternative has you covered. An alternative guestbook is a great gift for your mom-to-be. It shows all the people who came to celebrate a joyous occasion. Guests sign wooden bottle cutouts and then insert them into the shadow box. Place an ultrasound picture or any photo you like inside to personalize the frame. Prop the memory book up with the easel back to display as part of your party decor. The range of colors also allows it to blend in with any party theme and make it gender neutral. Plus, mom can use the memory filled guest book as part of the nursery décor once the celebration is over.